2023-11-02

Optical and mechanical properties of graphene

Graphene has excellent optical properties, with an absorption rate of about 2.3% over a wide wavelength range, making it almost transparent. Within the thickness range of several layers of graphene, with each increase in thickness, the absorption rate increases by 2.3%. Large area graphene films also have excellent optical properties, and their optical properties change with the thickness of graphene. This is an unusual low energy electronic structure possessed by single-layer graphene. At room temperature, a voltage is applied to a double-gate double-layer graphene field-effect transistor, and the bandgap of graphene can be adjusted between 0 and 0.25 eV. When a magnetic field is applied, the optical response of graphene nanoribbons can be tuned to the terahertz range.When the intensity of the incident light exceeds a certain critical value, graphene's absorption reaches saturation. These characteristics allow graphene to be used as a passive mode-locked laser. This unique absorption

2023-07-17

The function and characteristics of scales graphite

Skin graphite, as a functional filler for coatings, is mainly used for anticorrosive coatings, fireproof coatings and conductive coatings. As an anticorrosive material, it is a rust -proof primer made of charcoal black, talc powder and oil. It has good chemical resistance and solvent resistance. If you add chemical pigments such as zinc yellow to the formula, the rust -proof effect will be better.Scales graphite manufacturers believe that expansion graphite can be used as fireproof fillers. It is a graphite layer compound obtained by natural graphite thin slices as raw materials. Under heating conditions, the volume of expansion graphite quickly expands (300 times) to suffocate the flame, and at the same time, the expansion substance can be isolated, which can be isolate the flames, delay or interrupt the spread of flames, not burning, good flexibility, high surface energy, charcoal layer strength strength good. However, the volume and dosage of the expansion body should be appropriat

2023-08-01

Characteristics and Applications of High Purity Graphite

High purity graphite means that the carbon content of graphite is more than 99.99%. High purity graphite has the advantages of high strength, high density, high purity, good seismic resistance, high temperature resistance, oxidation resistance, small resistance coefficient, corrosion resistance, easy precision machining, etc. It is an ideal inorganic non-metallic material, which is used for processing and manufacturing electric heating elements, Electrical discharge machining graphite, sintering mold, electronic tube anode, etc, Widely used in advanced refractory materials and coatings in the metallurgical industry, stabilizers for military pyrotechnic materials, pencil leads in light industry, carbon brushes in electrical industry, electrodes in battery industry, and catalyst additives in fertilizer industry, high-purity graphite can be further processed to produce high-tech products such as graphite emulsion, graphite sealing materials and composites, graphite products, and graphite

2023-09-06

Introduction to Graphite Electrodes

Graphite electrodes are made of petroleum coke and asphalt coke as aggregates, coal tar pitch as binder, and undergo raw material calcination, crushing and grinding, batching, kneading, forming, roasting, impregnationA high-temperature resistant graphite conductive material made by graphitization and mechanical processing, called artificial graphite electrode (referred to as graphite electrode), to distinguish it from using natural graphiteA natural graphite electrode prepared from raw materials.Graphite electrodes are mainly used as conductive electrode materials for arc steelmaking furnaces.

2023-04-03

The shortcomings and prevention of graphite mold heat treatment process

The problem that graphite boat should pay attention to when maintenance is maintained

1. Prevention of strong corrosion of flame direct -injection engine graphite products side and bottom 砣;2. Use the entire process to turn the graphite boat once a week to improve the use period of graphite products;3. A proper interval should be kept in the middle of the graphite boat and the furnace wall, and graphite products should be put in the middle of the furnace;4. Pull out the coal ash and sticky conditions in the form of the form should be gently patted to prevent damaging graphite products;5. In the transportation conditions, it is necessary to hold it lightly, and it is strictly forbidden to fall;6. Strictly prevent the wet and cold, try to put it as much as possible or on the wooden shelf in the storage condition;7. The model specifications are the capacity of copper;8. Before using the dryer equipment or beside the furnace, it must be baked, and the temperature gradually rises to 500 ° C;9. The use of moderate combustion and additives will reduce the period of use.

2023-04-25

Pure method of high -carbon graphite

The flotation method is a type of energy consumption and reagent consumption and low cost in the conventional purification method of minerals. This is the advantage of the floating method purification method. For scales -shaped graphite, multi -segment mills cannot be completely unbuttoned, but they are not conducive to protecting large scales of graphite. Therefore, the use of flotal methods to further improve the graphite taste. High carbon graphite containing more than 99%of carbon must use chemical methods to use graphite.(1) Pure method of alkaline acid. The carbon content after the purity method of alkaline acid method can reach more than 99%, which has the characteristics of less one -time investment, high product quality, and strong process adaptability. The purity of metal mines can adopt the advantages of alkaline acid method). The alkaline acid method is a wide range of methods in my country today; its disadvantages are large energy consumption, long response time, large gr

2023-05-05

Insufficient technical investment in domestic graphite powder production enterprises

As a policy of each graphite deep processing production company, it is far from reality. The single product function is not bad, but the stability of batch production is doubtful, and the consistency of each batch of products cannot be guaranteed. A professor of deep processing and production of graphite powder believes that the exchanges of different types of different types of information for the deep processing and production of graphite powder will be a long process. The gap between many companies is that they have excellent experiments but cannot produce in batches. The following editors analyze the reasons for the lack of technical investment in domestic graphite powder production enterprises:It is not related to the automation control of the company's production line, which is a systematic problem. At present, graphite powder deep processing production equipment accounts for more than half of the imported equipment. Graphite mineral resources are a very important strategic reso

2023-03-06

What are the characteristics of graphite?

What are the characteristics of graphite? Graphite is a slot -type graphite dish, which contains one or several strips of two slot surfaces and bottom -end support points. The relative grooves of the hole, the respective design schemes of the relative two grooves are at least one exhaust pipe square groove, and the design scheme of each of the two -slot surface of the support point of the bottom support point has an corner slot. The design scheme below the highlight of the two neighboring W -shaped dual slots is based on the parallel surface of the slogan and cross -section of the design scheme.This utility model patent makes the hard alloy knife -shaped piece -shaped product in the process of boiling glue in the whole process of pillar opening and vacuum pumping. Technical majors make graphite and graphite products for customers. Welcome customers to visit everyone in person.

2024-03-19

Graphene: the new star of future materials technology

Graphene, known as "black gold", has become a new star in the field of materials science and technology with its excellent physical properties and wide application prospects.Graphene has super-strong electrical